Machine for grinding car or engine wheels.



Patented Mar. 27, |900.

W. I".` LESI'IUBE.

MACHINE FOR GBIN'DING CAR 0R ENGINE WHEELS.

Ii ti ldm 2 (No Model.) (App ca on e y 1, 1898 Renewed Sept 1, 1899) 2sheets sheet I.

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Patented Mar. 27, |900.

W. P. LESHURE.

MACHINE FOR GRINDING CAR ORJENGINE WHEELS.

2 Sheets-Sheetv 2.

(No Modal.)

(Application led. May 21, 1898. Renewed Sept. 1, 1899.)

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Tn: ohms PETERS no. num-uno, wAsuNaos. o c.

wILLARD r. nessuna', on SPRINGFIELD, MASSACHUSETTS.

MACHINE FCR'GRINDING CAR` OR ENGINE WHEELS. -Y

SPECIFICATION forming part of Letters Patent No. 646,093, dated March27, 1900.

Application led MayZl, 1898. Renewed September 1, 1899. Serial No.729.261. (No model.) I

T0 all whom it may concern:

Be it known that I, WILLARD P. LEsHURE, a citizen of the United Statesof America, residing at Springfield, in the county of Hampden and Stateof Massachusetts, have invented new and useful Improvements in Machinesfor Grinding Oar and Engine Wheels, of which the following is aspecification.

This invention` relates to caigwlehgrimling machines, and particularlyto that class thereof which is adapted to be operatedupon the wheels ofcars or locomotives for the purpose of grinding and truing the treadportions thereof while in their normal positions thereon; and theinvention consists in thepeculiar construction and arrangement of saidmachines, all as hereinafter described, and more particularly pointedout in the claims.

In the drawings forming part of this specification, Figure 1 is a sideelevation of wheelgrinding-devices constructed according to myinvention, the same being there represented as placed in a pitunderandin operative relation to a locomotive-wheel there shown, all

of which are hereinafter Vfully described. A`

portion` of the truck-framev of a locomotive and a lifting-jack arel`indicated in dotted lines in this gure. Fig. 2 is across-sectionalView of said pit, showing therein in side elevation my said improvedwheel-grinding devices and showing parts of car-wheels and one axle inposition over said grinding devices to be operated upon thereby, thegrinding and the car-wheel-rotating devices in this iigure being shownseparately on 'opposite sides of said pit for the purposes of clearillustration of the construction thereof, as below described; but inpractice a group comprising p wheel-turning and tread-grinding devicesasillustrated in Fig. 1 is arranged upon th'e opposite walls of said pit,to the end that the grinding and wheel-rotating mechanisms of each groupmay operate coincidingly and the two wheels on one axle may beseparately operated upon. 'Fig'. 3 is a sectional View on line 3 3, Fig.2, and is hereinafter described.

Referring to the drawings, A indicates the side walls of the pit of thelocomotive-engine house. v j

B isthle track on the borders of the pit..1

C are the rail-timbers on the walls of the pit. D indicates iron platessecured against the sides of said timbers.

E indicates a car-axle, and F portions of a car or engine wheel.

Y In preparing for grinding a pairof wheels a lifting-jack, as indicatedin Fig. 1, is used to lift the truck-frame and car-axle' and wheelsthereon away from the Vtracks B suciently to permit the wheel turningand grinding devices to be brought substantially to the operativepositions thereunder shown in said figure. Subsequently, however, duringthe wheel-grinding operationthe axle and wheels thereon are supportedupon the below-described wheel-turning devices. f

2, Fig. 1, indicatesV a shaft Vdriven by any suitable motor having abelt kor other connection with a shaft 3, and the latter, through asmaller pulley thereon (shown in dotted lines) and a belt connection, asshown, drives a third shaft 4 at a slower speed, the said shafts 3 and4, respectively, actuating the grinding and the car-wheel-rotatingdevices, the one 4 throughthe vertically-extending shaft 5 con- 'nectedwith said last-named shaft by slowmotion angular gearing I J, as shown.The grinding devices are connected with said shaft 3 by a belt 6. ThesaidV car-wheel-rotating devices consist of a cylindrical'element orpulley 7, mounted ou a shaft 8 for movement against and frictionalcontact with said wheel, and said shaft rotates in a'rocking box 9 andin boxes 10 10 on the extremities of a yoke 12, carried on the uppersection 13 of said shaft 5. The. line cc, Fig'.i2, indicates the sectionof said yoke in Fig. 1. Said shaft 5 -has its lower end supported inbearings in a yoke 14 on said drivingshaft 4, between the arms of whichyoke said gear J rotates by engagement with the driving-gear I. Thelower end of said shaft 5, which passes through the hub of said gear J,has alongitudinal groove 15 therein,with which the inner extremity of apin 16 in said hub engages, whereby a sliding connection between saidshaft 5 and gear `J is provided, to the end that said shaft andconnected parts. may. follow the operative movements of said shaft 8,asbelow described, and the toggle connections K, Figs. 1 and 2, interposedbetween said shaft 5 and its separate upper section 13, contribute 'tosaid IOO movements. The principal and essential su pport of said shaft 8consists of the parts which carry said rocking box 9, through which saidshaft extends, supplemented by said devices carried on said shaft 5, andthey are constructed as follows to provide adequate means for lifting awheel and the axle thereof through the forcible impact of the face ofsaid pulley 7 against the periphery of said wheel and holding the axleconstantly against its upper bearing-box in the engine or car truckwhile the grinding of the wheel proceeds. Thus it follows that thetreads of the wheels shall be ground to a true circle, of which the axleon which they are is the center, and, furthermore, that the frictionalcontact of said pulley 7 with the car-wheel F shall be such as will notfail to impart a continuous rotary movement to the car-wheel during thegrinding and truing of the tread thereof. The supporting devices forsaid box 9 consist of a yoke 17, engaging a trunnion on opposite sidesthereof, having an arm 1S thereon freely entering a socket in the upperend of a sliding carrier 19 (see Figs. 2 and 3) and having a yieldingsupport therein consisting of a spring, as indicated in Fig. 2. Saidspring, forming the support of said yoke 17, is of sufcient resistanceto sustain the weight of the car-wheel F and the end of the axle onwhich the latter is without deflection when the axle, as aforesaid, isforced against its bearing-box, but said spring may yield slightly whenthe friction-pulley 7 shall encounter small protuherances on the treadof the wheel duringv the grinding thereof. Any change of the axialdirection of the shaft 8 during said movements of the pulley 7 isprovided for by the freedom of said yoke 12 and boxes 10 thereon for aswinging move ment more or less and a rocking movement of the box 9 onsaid yoke 17. Said carrier 19 is supported for said sliding movement ona frame 20, firmly bolted to the wall of said pit,havin g twooppositely-arran ged overhanging borders 21, under which the edges ofsaid carrier engage, as shown in Figs. 1, 2, and 3. A screw 22, having ahand-wheel thereon, as shown, screw-engaging the lower end of said frame20, serves to move said carrier and said pulley upwardly for the purposeabove set forth and to drop the latter away from thecar-wheel whendesired.

As above described, the wheel-rotating and the wheel-grinding devices inpractice act in concert upon each car-wheel, and in Fig. 1 they are soshown, but in Fig. 2 for the purpose of illustration, as aforesaid, thegrinding-wheel-supporting devices are shown separate from saidwheel-rotating devices and are constructed and arranged to operate asfollows and to a certain extent are regulated, as below described, bythe said wheel-rotating devices: The grinding-wheel frame 3.1L is hingedby its lower end to the lower part of said plate D, as shown in Figs. 1and 2, so that it may swing more or less to provide for convenientlymoving the grinding-wheel to and away from the car-wheel-iirst, to bringit to working position, and, secondly, to carry it out of the wayof anyobject which may be moving on said track. When said frame is swungagainst the side of the pit, as in Fig. 1, it is there fastened by bolts33, engaging slotted extensions on opposite borders, as shown. Saidframe 34 is provided with the below-named parts, of ordinary slide-restconstruction-viz., a table a, having a gibbed coni nection with saidframe for a sliding movement in a line with the track B, and a screw bfor adjustably moving said table a; a second table c, having a gibbedconnection upon said table a for a sliding movement across or at rightangles to the movement of the latter, and a screw d for reciprocallymoving said table c. Upon this last-named table are erected suitablebearing-boxes for the shaft 2l, on which the grinding-wheel 23 iscarried. On the last-named shaft is a pulley 25, which receives a beltfrom said driving-shaft 3, as shown. An ordinary double-actingratchetwheel 2G is secured on said screw d, and a swinging pawl-carryinglever 27 is also hung on said last-named screw, and on' said lever ispivoted a double-acting pawl 2S, which is actuated for reverseengagement with said ratchet byintermittent engagement with twoguide-bolts 29, as usual, whereby said screw d has reverse movementsimparted thereto, to the end that the table c and the grindingwheelshall be given reciprocatory movements and the said wheel be moved backand forth across the tread of the wheel -upon which it may be operating.Said pawl-carryinglever has its swinging movements imparted thereto bymeans of an eccentric 8O on said shaft 8, Fig. 2, and a connecting-rod31, connected by one end to said eccentric by the usual strap 32 andhaving its opposite end connected to said lever 27, as shown in Figs. 1and 2, by sleeves e and f and set-screws therein, whereby the extent ofmovement of said pawl 28, and consequently of the extent and speed ofthe feed movement of the wheel 23 across the car-wheel tread by theaction of said screw d to move said table c, may be regulated.

It is believed that the foregoing description of the operation of thesaid wheel-grinding devices makes the same clear and that therefore nofurther description is necessary.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. In a device of the class described, mechanism for sustaining thewheel of a car or analogous vehicle, and the end of an axle on whichsaid wheel is carried in contact with the bearing thereof on saidvehicle, and for imparting a rotary motion to said wheel and axle,comprising a shaft, a cylindrical element on said shaft for engagementwith said wheel, means for imparting a rotary motion to said shaft andelement, and for supporting IOO IOS

IIO

said shaft and holding said element yieldingly against said wheel, and agrinding-wheel and supporting devices therefor movable in the axial lineof said axle, and at right angles thereto, and supporting said wheel incontact with said vehicle-wheel, and means automatically inducing themovements of said grinding-wheel in theA direction of said axial line,substantially as described.

2. In a device of the class described, mechanism for sustaining theWheel of a car or analogous vehicle, and the end of an axle on whichsaid wheel is carried in contact with the bearing thereof on saidvehicle, and for imparting a rotary motion to said wheel and axle,comprising a shaft, a cylindrical element on said shaft for engagementwith said wheel, means for imparting a rotary motion to said shaft andelement and for supporting said shaft and holding said elementyieldingly against said wheel, and a grinding-wheel, a frame carryingthe last-named wheel,its shaft, and supports therefor, pivotallysupported for a swinging movement whereby the grinding-wheel is swungfrom, and under saidvehicle-wheel, means for holding the grindingwheelin either position, and means for rotating the last-nam ed wheel,substantially as described.

3. In a device of the class described, mechanism for sustaining thewheel of a car or analogous vehicle, and the end of an axle on whichsaid wheel is carried, in contact with the bearing thereof on saidvehicle, and for imparting a rotary motion to said wheel and axle,comprising the sliding carrier 19, means for adjusting said carriervertically, a boxsupporting yoke 17 having an arm entering a socket insaid carrier, a spring yieldingly sustaining said yoke,'a shaft-box 9,having trunnions engaging said yoke, and a yoke 12 having shaft-boxesthereon, combined with the shaft 8, supported in said boxes, adriving-shaft section 5, having a section 13 gearconnected. with saidshaft 8, and having the toggle connections K intermediate of said twosections, the car-wheel-engaging element` 7, on said shaft 8, and meansfor rotating said shaft 5, substantially as set forth.

4. In a device of the class described, mechanism for sustaining thewheel of a car or analogous vehicle, and the end of an axle on whichsaid wheel is carried, in contact with the bearing thereof on saidvehicle, and for imparting a rotary motion to said wheel and axle,comprising the sliding carrier 19, means for adjusting said carriervertically, a boxsupporting yoke 17 having an arm entering a socket insaid carrier, a spring yieldingly sustaining said yoke, a shaft-box 9,having trunnions engaging said yoke, kand a yoke 12 having shaft-boxesthereon, combined with the shaft 8, supported in said boxes, adriving-shaft section 5, having a section 13 gearconnected with saidshaft 8, and having the toggle connections K intermediate of said twosections, the car-wheel-engaging element 7, on said shaft 8, and meansfor rotating said shaft 5, the frame 34:, the table c sliding on saidframe, the shaft 24, and means for rotating the same and the wheel 23thereon, the table-actuating screw d, and mechanism in-V terconnectedbetween said shaft 8 and said screw d for intermittently rotating saidscrew and imparting sliding movements to said table, substantially asset forth.

WILLARD P. LESHURE.

Witnesses:

H. A. CHAPIN, K. I. CLEMoNs.

